local vim = vim

local main = require 'symbols-outline'
local util = vim.lsp.util
local buf_request = require('symbols-outline.utils.lsp_utils').request

local M = {}

local function get_hover_params(node, winnr)
  local bufnr = vim.api.nvim_win_get_buf(winnr)
  local fn = vim.uri_from_bufnr(bufnr)

  return {
    textDocument = { uri = fn },
    position = { line = node.line, character = node.character },
    bufnr = bufnr,
  }
end

-- handler yoinked from the default implementation
function M.show_hover()
  local current_line = vim.api.nvim_win_get_cursor(main.state.outline_win)[1]
  local node = main.state.flattened_outline_items[current_line]

  local hover_params = get_hover_params(node, main.state.code_win)

  buf_request(hover_params.bufnr, 'textDocument/hover', hover_params, function(_, result, _, config)
    if not (result and result.contents) then
      -- return { 'No information available' }
      return
    end
    local markdown_lines = util.convert_input_to_markdown_lines(result.contents)
    markdown_lines = util.trim_empty_lines(markdown_lines)
    if vim.tbl_isempty(markdown_lines) then
      -- return { 'No information available' }
      return
    end
    return util.open_floating_preview(markdown_lines, 'markdown', config)
  end)
end

return M
